Aspheric condenser lenses efficiently correct for spherical aberrations and coma. For this reason, one aspheric condenser can replace a multiple spherical element design. This replacement reduces the number of back reflections and ultimately yields higher transmission。
主要设备：
所用设备：
德国SatisLOH铣磨机和抛光机；
英国Talysurf PGI 1240
